1．床身
数控车床的床身结构和导轨有多种形式, 主要有水平床身、倾斜床身、水平床身斜滑鞍等。中小规格的数控车床采用倾斜床身和水平床身斜滑鞍较多。倾斜床身多采用30o、45o、60o、75o和90o角, 常用的有45o, 60o和75o角。大型数控车床和小型精密数控车床采用水平床身较多。
2．主传动系统及主轴部件
数控车床的主传动系统一般采用直流或交流无级调速电动机, 通过皮带传动,
带动主轴旋转, 实现自动无级调速及恒切速度控制。主轴组件是机床实现旋转运动的执行件。
3．进给传动系统
进给传动系统如图3所示。横向进给传动系统是带动刀架作横向(X轴)移动的装置, 它控制工件的径向尺寸。纵向进给装置是带动刀架作轴向(Z轴)运动的装置, 它控制工件的轴向尺寸。
4．自动回转刀架
刀架是数控车床的重要部件, 它安装各种切削加工刀具, 其结构直接影响机床的切削性能和工作效率。
数控车床的刀架分为转塔式和排刀式刀架两大类。转塔式刀架是普遍采用的刀架形式, 它通过转塔头的旋转、分度、来实现机床的自动换刀工作。如图4所示。两坐标连续控制的数控车床, 一般都采用6~12工位转塔式刀架。排刀式刀架主要用于小型数控车床, 适用于短轴或套类零件加工。
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注：联系我时，请说是在“傲立机床网”上看到的，谢谢！